Robustness of CNT Via Interconnect Fabricated by Low Temperature Process over a High-Density Current
2008
We fabricated a carbon nanotube (CNT) via interconnect and evaluated its robustness over a high-density current. CNTs were synthesized at temperatures as low as 365 °C, which is probably the lowest for this application, without degrading the ultra low-k interlayer dielectrics (k = 2.6). We measured the electrical properties of CNT vias as small as 160 nm in diameter and found that a CNT via was able to sustain a current density as high as 5.0×10 6 A/cm 2 at 105 °C for 100 hours without any deterioration in its properties.
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